ENERGY CONVERSION
Kilowatt-hour to Watt-hour.
Convert kilowatt-hour (kWh) to watt-hour (Wh), with the math explained.
THE MATH, MADE SIMPLE
How to convert kilowatt-hour to watt-hour
Multiply your kilowatt-hour value by 1,000 to get the equivalent in watt-hour. Both units are normalized through the joule.
Wh = kWh × 1,00010 kWh = 10,000 Wh
Result rounded to 12 significant digits. Change the precision in the calculator to suit your task.QUICK REFERENCE
kWh to Wh conversion table
| Kilowatt-hour (kWh) | Watt-hour (Wh) |
|---|---|
| 1 kWh | 1,000 Wh |
| 2 kWh | 2,000 Wh |
| 5 kWh | 5,000 Wh |
| 10 kWh | 10,000 Wh |
| 20 kWh | 20,000 Wh |
| 50 kWh | 50,000 Wh |
| 100 kWh | 100,000 Wh |
| 500 kWh | 500,000 Wh |
| 1,000 kWh | 1,000,000 Wh |
About the kilowatt-hour
The kilowatt-hour (kWh) is a unit of energy. One kilowatt-hour equals 3,600,000 joule (base unit) in this calculator.
All kilowatt-hour conversionsAbout the watt-hour
The watt-hour (Wh) is a unit of energy. One watt-hour equals 3,600 joule (base unit) in this calculator.
All watt-hour conversionsCommon questions
What is 1 kWh in Wh?
One kilowatt-hour equals 1,000 Wh. Use the formula above for other values.
Why might another calculator show a different last digit?
Calculators may round at different stages or use different unit conventions. We keep full JavaScript numeric precision during calculation and round only for display. Choose up to 15 significant digits. Check US versus UK units and the notes for this category.
BROWSE BY UNIT